The Ultimate Diaper Decision and Changing Guide

Diapers take up a surprising amount of headspace in the first couple of years. You’ll change somewhere between 6,000 and 10,000 of them before your child is potty trained, so it’s worth getting a few decisions right early on rather than fumbling through every single change. This guide covers the cloth versus disposable question honestly, how to actually get a good fit, a proper step-by-step for changing, and what’s normal versus what’s worth mentioning to your GP or health visitor.

Cloth vs Disposable: What Actually Matters

There isn’t a “correct” answer here. Plenty of families mix the two, using cloth at home and disposables for nursery, grandparents, or travel. What matters is being honest with yourself about your routine, your washing machine access, and how much time you genuinely have.

Cloth Nappies

Modern cloth nappies aren’t the terry squares and safety pins your parents might remember. Most parents now use either pocket nappies, all-in-ones, or prefolds with a separate waterproof cover. A starter set of 20 to 25 nappies typically costs somewhere between £200 and £400, but because you reuse them for one child (or several), they usually work out cheaper than disposables over time, especially if you’re using them until your child is fully potty trained.

• Lower ongoing cost: the big spend is upfront. After that you’re mainly paying for washing powder, water and electricity.
• Less landfill waste: a single disposable nappy can take several hundred years to break down, so cloth is the better option if that’s a priority for you.
• More laundry: expect to wash nappies every two to three days. You’ll need a dedicated nappy bin or wet bag, and a washing machine that can handle a hot enough cycle.
• A bit more work out and about: you’ll need to carry a wet bag for soiled nappies until you’re home.

Disposable Nappies

Disposables remain the more common choice simply because they fit around busy, unpredictable days. You use one, bin it, and move on.

• Convenience: no washing, no soaking, no extra laundry loads.
• Absorbency: most modern disposables use a gel core that pulls moisture away from the skin, which can help with overnight sleep for both baby and parent.
• Cost adds up: budget for roughly £500 to £800 a year depending on the brand and how quickly your baby grows through sizes.
• Environmental trade-off: if this bothers you, look for brands using more sustainable materials, though “eco” disposables still take a long time to break down and aren’t usually compostable at home.

If you’re not sure which way to go, try a small pack of cloth nappies alongside your usual disposables before committing to a full cloth set. It’s a lot easier to work out what suits your routine in practice than in theory.

Getting the Fit Right

A nappy that doesn’t fit properly is the most common cause of leaks and blowouts, more often than the nappy itself being faulty.

Sizing

Weight ranges on the pack are a starting point, not a guarantee. Babies are different shapes, so a baby at the top of a weight range with slim legs might still need to size up if you’re seeing red marks around the legs or waist after a change, or if the tabs barely reach the front. On the flip side, if there’s a gap you can fit more than two fingers into at the waist, or the nappy sags noticeably, it’s too big.

For newborns, look for nappies with a cut-out or fold-down section at the front. This keeps the waistband away from the umbilical cord stump until it heals and falls off, usually within one to two weeks.

Signs the Fit Needs Adjusting

• Leaking at the legs or back: usually means the nappy is too small, or the leg cuffs are tucked in rather than fanned out.
• Red indentation marks: a light mark that fades quickly is normal. Deep red marks that stay for a while suggest the nappy is too tight or the wrong shape for your baby.
• Frequent blowouts up the back: often a sizing issue rather than a “bad” nappy brand, though it’s worth trying a different shape if it keeps happening.

How to Change a Nappy, Step by Step

1. Get everything within arm’s reach first. Clean nappy, wipes (or cotton wool and water for newborns), barrier cream if you’re using one, and a change of clothes if needed. You don’t want to be reaching away from your baby once you’ve started.
2. Never leave your baby unattended on a raised surface, even for a second, even if they’ve never rolled before. Keep one hand on them at all times if you’re on a changing table.
3. Undo the dirty nappy but don’t remove it straight away. Use the front of it to give an initial wipe, especially useful with a messy nappy, and be ready for a surprise if you have a baby boy (cover with a cloth if needed).
4. Clean front to back, always, particularly important for baby girls to avoid spreading bacteria toward the vagina. Get into the skin folds gently rather than scrubbing.
5. Let the skin air dry for a moment before putting the new nappy on, or pat dry with a clean cloth. Trapping moisture under a fresh nappy is one of the main causes of nappy rash.
6. Apply barrier cream if your baby is prone to redness, but you don’t need it at every single change if the skin looks fine.
7. Slide the clean nappy underneath, fasten the tabs evenly on both sides, and check you can fit two fingers comfortably at the waist. Fan out the leg cuffs so they’re not tucked inward, as this is a common cause of leaks.

Changing a Wriggly, Mobile Baby

Once babies start rolling and crawling, changes can turn into a bit of a wrestling match. A few things genuinely help:

• Keep one or two “changing table only” toys that only come out during nappy changes, so they hold novelty value.
• Sing, talk, or narrate what you’re doing. Babies respond well to a familiar voice, even if the words don’t matter.
• Have everything ready before you start so you’re not letting go to grab something mid-change.
• For toddlers who really won’t lie still, some parents find changing standing up works better, using pull-up style nappy pants designed for this.

How Often to Change

Newborns need changing roughly every 2 to 3 hours, or as soon as possible after a poo, since newborn skin is more sensitive and prone to irritation. Expect 6 to 8 wet nappies a day once feeding is well established, which is actually a useful sign your baby is getting enough milk.

From around 3 to 4 months, most babies can go closer to 3 to 4 hours between changes during the day, though you should still change promptly after a bowel movement. Overnight, a good quality nappy should hold through a full stretch of sleep for most babies, but always change a wet or dirty nappy before settling your baby down for a longer sleep.

If you notice fewer wet nappies than usual, particularly fewer than 4 to 6 in 24 hours, or nappies that seem unusually dry, mention it to your midwife, health visitor or GP, as it can occasionally be a sign your baby isn’t feeding well.

Nighttime Nappies

Overnight nappies are built with a denser absorbent core to cope with longer stretches without a change. If you’re getting leaks overnight but not during the day, it’s worth trying a dedicated night nappy or nappy one size up before bed, rather than assuming your baby has suddenly outgrown their daytime size. A booster pad inside the nappy can add extra capacity for particularly heavy wetters, but check it doesn’t bunch up and cause discomfort or leaks elsewhere.

What to Keep in the Changing Bag

• Nappies: pack more than you think you’ll need, roughly one per two hours out, plus two spares.
• Wipes: a travel pack, plus a small pack of cotton wool if your baby has sensitive skin.
• A portable changing mat: public changing facilities aren’t always clean or available.
• Barrier cream: a small pot or tube rather than the full-size one at home.
• Nappy sacks or a wet bag: for sealing away dirty nappies until you find a bin.
• A full spare outfit: blowouts happen at the worst possible times.
• Hand sanitiser: useful when there’s no sink nearby.

Disposing of Nappies Properly

For disposables, seal each used nappy in a nappy sack or bag before putting it in a bin, ideally one with a lid, to keep smells contained and reduce the mess for whoever takes the bin out. Don’t flush wipes, even ones labelled “flushable,” as they can block pipes.

For cloth nappies, shake or scrape off solid waste into the toilet before storing the nappy in a dry pail or wet bag until wash day. Most manufacturers recommend washing on a hot cycle (60°C) without fabric softener, as softener can affect absorbency over time. Check the specific care instructions that came with your nappies, as recommendations vary between brands.

When to Get Nappy Rash or Skin Issues Checked

Mild redness that clears with more frequent changes, air time and a barrier cream is common and nothing to worry about. It’s worth speaking to your GP or health visitor if you notice broken or bleeding skin, blisters, a rash that doesn’t improve after a few days of home treatment, or a rash that seems to be spreading rather than settling, as this can sometimes indicate a fungal infection that needs a specific cream. Any blood in the nappy, unexplained swelling, or a baby who seems in pain during changes is also worth getting checked promptly.

There’s no single right way to diaper a baby, only what works for your family, your budget and your baby’s skin. Give yourself permission to adjust as you go. What works at six weeks often needs tweaking by six months, and that’s completely normal.